Various implementations include approaches for training a surface detection classifier and detecting characteristics of a surface, along with related micromobility vehicles. Certain implementations include a method including: comparing: i) detected movement of a micromobility (MM) vehicle or a device located with a user at the MM vehicle while operating the MM vehicle, with ii) a surface detection classifier for the MM vehicle; and in response to detecting that the MM vehicle is traveling on a restricted surface type for a threshold period, performing at least one of: a) notifying an operator of the MM vehicle about the travel on the restricted surface type, b) outputting a warning at an interface connected with the MM vehicle or the device, c) limiting a speed of the MM vehicle, or d) disabling operation of the MM vehicle.

An axle assembly for a bicycle includes an axle having an inner wall extending along a length of the axle between a first end and a second end of the axle. The inner wall at least partially defines a first volume and a second volume within the axle. The first volume has a first diameter, and the second volume has a second diameter that is greater than the first diameter. The first volume is closer than the second volume to the first end of the axle. The axle assembly also includes a sensor attached to the inner wall of the axle within the second volume of the axle.

A straddle type vehicle comprises a front antenna configured to be capable of transmitting/receiving a wireless signal of a predetermined frequency band and arranged closer to a front side than a seating portion on which a rider can sit, and a rear antenna configured to be capable of transmitting/receiving a wireless signal of a predetermined frequency band and arranged closer to a rear side than the seating portion, the front antenna has directivity in the front side of the straddle type vehicle.

An electric scooter with a lighting system that includes a rear mounted light that projects light upward and toward the front of the scooter to illuminate the back of a rider, and side lights that project light to illuminate the sides of a scooter. The lighting system employs a multi-faceted approach to vary intensity and effects for improved visibility in traffic. The light system can be configured to automatically illuminate or change effects in response to road or environmental conditions, or in response to existing or future roadway infrastructure such as autonomous traffic infrastructure or adaptive traffic control systems. The light system may also be integrated with the braking system for signaling a slow down or stop. The system may be controlled by communication between an onboard processor and a personal computing device such as a smart phone that can be docked on the scooter and provide display of information and a means of input.

According to one embodiment of the present invention, provided is a power assisted driving system comprising: a measurement part for measuring an operation state of a crank; a control part for determining a voltage or current necessary for power assistance on the basis of the measured value of the measurement part; a motor part, to which the voltage or current is applied, for providing driving power; and a power supply part for providing electric power to components other than itself.

A seat apparatus includes a vehicle seat including a cushion member having a bottom portion with a plurality of recessed portions, a plurality of air cells configured to expand by injection of compressed air, and a fluid supply mechanism configured to supply the fluid to the air cells. In the seat apparatus, at least one of the recessed portions is provided at a portion of the bottom portion of the cushion member positioned at a seating portion of the vehicle seat, the hip of a passenger being placed on the seating portion. Each air cell is expandable in a corresponding one of the recessed portions. The fluid supply mechanism is configured to expand at least one air cell by supplying the compressed air thereto and to change the at least one air cell to be expanded by switching a fluid supply destination.

A diagnostic method for a bicycle hydraulic disc braking system, having a master cylinder assembly with a cylinder inside which a piston reciprocates against the action of a return spring. The master cylinder has a hydraulic tank with a bottom, a ceiling, and a membrane that divides the hydraulic tank into two chambers. The hydraulic tank is connected to the cylinder through the bottom. A metering device measures the distance between the membrane and the ceiling of the tank. The output signal of the metering device is evaluated to determine that operation is correct when the membrane temporarily approaches the ceiling by a predetermined extent range, or incorrect otherwise. A positive evaluation reflects the correct operating condition, and a negative evaluation reflects an incorrect operating condition.

A diagnostic method for a bicycle hydraulic disc braking system, having a master cylinder assembly with a cylinder inside which a piston reciprocates against the action of a return spring. The master cylinder has a hydraulic tank with a bottom, a ceiling, and a membrane that divides the hydraulic tank into two chambers. The hydraulic tank is connected to the cylinder through the bottom. A metering device measures the distance between the membrane and the ceiling of the tank. The output signal of the metering device is evaluated to determine that operation is correct when the membrane temporarily approaches the ceiling by a predetermined extent range, or incorrect otherwise. A positive evaluation reflects the correct operating condition, and a negative evaluation reflects an incorrect operating condition.

When an external detection device detects an obstacle (another vehicle (T)) on either a left or right side of the own vehicle (M), a control device of a steering assistance device for a saddle type vehicle controls an assist torque so that a handle operation to the side opposite to the side on which the obstacle is detected becomes heavier (more difficult to turn) than a case in which the obstacle is not detected. The handle operation to the side on which the obstacle is detected makes a handle relatively light (makes it easier to turn) while steering assist is maintained.

An electronic device is configured to suitably control of a human-powered vehicle component. The electronic device includes a communicator configured to wirelessly communicate with a pressure detector detecting pressure of at least one tire of the human-powered vehicle. The electronic device is provided in a human-powered vehicle component including at least one of a transmission mounted to the human-powered vehicle, a suspension mounted to the human-powered vehicle, and an adjustable seatpost mounted to the human-powered vehicle.